In this paper, using principal component method 115 strong-motion earthquake records are analysed.

本文运用主成份法对115个强地震运动资料进行了分析。

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Because the separation for GISE is an almost singular regression problem, the classic least square method and principal component method are not satisfactorily for solving the problem.

由于工具误差分离存在着很强的复共线性，传统的最小二乘方法与主成分方法不能很好的解决这一问题。

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According to results of analyzing on the utilization of solar energy with principal component method, Yinchuan City of Ningxia is ranked at No. 3, Guyuan of Ningxia at No. 12 in cities of China.

利用主成分综合分析，银川的太阳能及其可利用状况在全国排名第3位，固原排名第12位。

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